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    <title>Sentinel Toolbox Help - Orthorectification</title>
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        <td class="header">&nbsp;
            Orthorectification</td>
        
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<h3>Orthorectification Dialog</h3>

<p>
    The orthorectification command applies a selected map projection to a Coordinate Reference System and an
    <a href="OrthorectificationAlgo.html">orthorectification algorithm</a> to the selected source product and creates a new
    target product. The target product will then contain corrected pixel values with respect to the used
    Digital Elevation Model (DEM).
    If you do not want the geodetic correction applied, use the <a href="Reprojection.html">Reprojection</a>.
</p>

<p>The orthorectification dialog equals the <a href="Reprojection.html">Reprojection Dialog</a> except that
    a digital elevation model must be specified.
</p>

<p align="center"><img src="images/OrthorectificationDialog.png"></p>


<h4>Digital Elevation Model (DEM)</h4>

<p>
    You can select the digital elevation model which should be used for
    <a href="OrthorectificationAlgo.html">orthorectification</a>. Either you use the internal elevation model of
    the product or an external DEM. If you select an external DEM and it is currently not installed on your system,
    a dialog will appear to enable you to download and install the DEM.<br> 
    Currently there is only the <a href="GETASSE30ElevationModel.html">GETASSE30 DEM</a> available.
</p>

<p>
    Note that a DEM-correction of latitude and longitude can also be done in satellite coordinates using the
    <a href="CreateDemRelatedBands.html"> Create DEM-related Bands</a> action found in the <b>Tools</b> menu.
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